Kingspan TF70

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Kingspan TF70 Insulation Boards

At Insulation Board we provide the best prices on Kingspan TF70 PIR Insulation Boards. We stock all sizes, and our website is fast, simple to use and efficient. We at Insulation Board, are the UK’s number one provider of PIR insulation boards, you can have peace of mind when you order online with us.

PIR Insulation Board

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Our Kingspan TF70 Insulation Board is a high-quality premium product. The boards are manufactured with low global warming potential (GWP) and zero ozone depletion potential (ODP). Available in a variety of thicknesses designed for multiple applications including both commercial and residential, new, or retrofit buildings. When installed correctly the TF70 boards will have a never-ending lifespan. TF70 Insulation Boards can create a thermal envelope around your home, helping to create an environment with a healthy and stable internal climate. The more heat you prevent from escaping the building through thermal bridging, the more money you will save on energy bills! Up to 30% of energy bills can be saved by installing the correct insulation into your residential or commercial building. Preventing heat loss can also have positive impacts on climate change by reducing global warming impacted by our heating every year.

TF70 Insulation Boards can be installed in a variety of applications including pitched roofs, masonry walls, flat roofs, solid floors and more. See floor application methods below:

  • Beam and dense block ground floors – Insulation below the floor screed
  • Suspended timber ground floors – Insulation between joists
  • Solid concrete ground-based floors – below screed
  • Solid concrete ground-based floors – below slab
  • Timber floor on battens 
  • Timber floating floor

Kingspan TF70 PIR boards are made up off a fibre-free rigid thermoset polyisocyanurate (PIR) core with composite foil facings bonded to each side. The boards are yellowed in colour with smooth foil facings and a square edge, easy to install and apply finishing products.

Each Kingspan Insulation Board is 2400mm by 1200mm and comes in a range of thicknesses from 20mm to 160mm with a coverage of 2.88m². TF70 boards have an incredible thermal conductivity of 0.022W/mK. The compressive strength of Thermafloor TF70 typically exceeds 140 kPa at 10% compression. 

If you’re looking for an alternative product to TF70, Insulation Board stock Celotex Insulation Boards, this product that can be used as an equivalent to TF70. Each board is 2400mm by 1200mm with a coverage of 2.88m2 and a thermal conductivity of 0.022W/mK. 

TF70 Certifications:
Standard To BS EN 13165
Fire performance To BS EN 13501-1:2018, Euroclass RtF F
British Board of Agreement (BBA) Certification 14/5133
Recycled Content 0% (minimum) to BS EN ISO 14021

How to cut Thermafloor (TF70) PIR Insulation Boards:

The boards should be measured and marked to size and cut using a fine-toothed saw. Cutting the board on a high flat surface will give room for the saw to go through the board. The board can also be cut by scoring one side of the board with a sharp knife and snapping over a hard edge. The other side of the board can then be scored.

How to install Kingspan TF70 below a floor slab

  • Ensure the site is prepared and foundations, built to damp proof course (DPC) level where necessary. A thin sand binding can be applied to achieve a continuous smooth level surface, free from projections.
  • The damp proof membrane (minimum 300 micron / 1200-gauge polythene) should be laid with joints well lapped and folded, to prevent the passage of water, prior to laying the insulation boards. The membrane should be brought up the surrounding walls until it is sufficiently above the height of the walls Damp Proof Course so that it will connect with or form the DPC.
  • The insulation boards should always be loose-laid break bonded, with joints lightly butted together. If two layers of insulation are required, the next layer should be horizontally offset to the previous layer, the board joints in the two adjacent layers should not coincide with each other. See image below.
  • A strip of the insulation board (minimum 20 mm thick) should be placed vertically around the outside of the floor slab to prevent cold bridging. The top of the strip of insulation board should be level with the top of the floor screed and the bottom should be level with the bottom of the horizontal floor insulation, and closely butted up to it with no gaps.
  • Insulation boards should be overlaid with a polythene sheet (not less than 125 micron / 500 gauge), to prevent the wet concrete penetrating the joints between the boards and will act as a vapour control layer. Ensure the polythene sheet has 150 mm overlaps, taped at the joints, and is turned up 100 mm at the walls. The concrete slab and screed should be allowed to dry out prior to the installation of the floor finish.

Does insulating your floor reduce heating costs?

Insulating your floor will help reduce heating costs by less heat seeping out through the floor. A properly insulated ground floor will leave rooms feeling more comfortable and require less time to warm up when heating is turned on.
10% of the heat in a room can be lost through uninsulated ground floors and potentially higher, up to 15%, if the house has been well insulated or thermally improved in other areas. Upgrading and insulating existing solid or suspended floors should be one area homeowners should not forget about.

What is the difference between Kooltherm and Therma?

Kooltherm is a range of advanced phenolic insulation whilst Therma is a range of Polyisocyanurate (PIR) insulation. Therma is not as thermally efficient as the Kooltherm range.
Kooltherm gives a thermal conductivity of 0.019W/mK whilst Therma gives a thermal conductivity of 0.022W/mK.

What is Kingspan insulation used for?

Kingspan is the global leader in high-performance insulation materials and creates building envelope solutions. Kingspan’s insulation products include innovative and super high performing insulated panels, suitable for roofs, walls, floors, and other services. Kingspan provides a wide range of insulation materials used for a wide variety of projects.